It looks like it's a 7.5cm PAK 40 barrel.
'I do not think we can hope for any better thing now.
We shall stick it out to the end, but we are getting weaker of course, and the end cannot be far.
It seems a pity, but I do not think I can write more. R. SCOTT.
Last Entry - For God's sake look after our people.'
In memory of Capt. Robert Falcon Scott, Edward Wilson, Henry Bowers, Lawrence Oates and Edgar Evans. South Pole Expedition, 30th March 1912.
I go with Ned.
Looks like it has been found in a swamp, or very wet enviroment.
This is a piece of "gold" for the right museum- or advanced panzer collector.
Edit: Yes i think the same as Ned.
Collect ROA, Cossack, Schuma and other WW2 Volunteer militaria.
"Be Humble and kind, for you may find that it was Odin you entertained"
Thanks to all.A great forum. Alex